A2091ToFast: Even more A2091/A590 speedup possible!

[Tenacious]

Sorry my question is a little off topic, but, perhaps you know.

In an A2000 system with a 32-bit accelerator and 32-bit fast ram, is there any improvement in the A2091's performance by adding the 2 Megs of 16-bit Fast Ram to the card itself?  Faster DMA?  More buffer?

In a purely 16-bit A2000 (No 32-bit accel or mem), does the A2091 perform better when populated with those same 2 Megs of Fast  versus  having all the Fast Ram on a separate ram expansion?

[Tenacious]

From my own experience, my A2000 had 16MB 32-bit fast on my GeForce 040, and there was a definite performance improvement when I added 8MB 16-bit fast (via a SupraRam card).  Even with 3.9, BB1-4, and various other hacks & speedup patches, there are still some programs that look for 16-bit memory first.  It was definitely worth it to me to add some.  Your mileage may vary.  

Interesting.  I wasn't expecting that, I've heard a few times that mixing 16 and 32 bit memory slows the accelerator (not necessarily the transfer performance of the SCSI interface).  

Your GE-Force has a SCSI interface included, right?  So your 2000 doesn't have an A2091?

I asked because I have an A2500 with Commodore's 030 accelerator, 32-bit fast ram, A2091, and NO 16-bit Fast Ram anywhere (the Chip Ram is 16-bit, of course).  It makes sense to me that some ram on the A2091 would improve its transfer rate, buffering, etc.

[Tenacious]

@ Mike
I know there are several, what is your favorite util to determine HD transfer speeds?

@ Speedy
Thanks for the info.